EP 1873430 A3 20081112 - Reversed actuator with minimal leak potential
Title (en)
Reversed actuator with minimal leak potential
Title (de)
Umgekehrter Aktuator mit minimalem Leckpotential
Title (fr)
Actionneur inversé avec un potentiel de fuite minimum
Publication
Application
Priority
US 47979406 A 20060630
Abstract (en)
[origin: EP1873430A2] An apparatus is provided for a valve actuator assembly (16) comprising an actuator housing (32), a piston (34), and a spring (36). The piston (34) is disposed within the actuator housing (32). The piston (34) is configured to couple to a valve element (14), and includes an inner cylindrical section (46) and an outer cylindrical section (48). The outer cylindrical section (48) of the piston (34) is spaced apart from the inner cylindrical section (46) to define a recess (50). The piston (34) is further configured to move within the actuator housing (32) in a first direction and a second direction, to thereby move the valve element (14) toward a first position and a second position, respectively. The spring (36) is disposed within the actuator housing (32), and is configured to supply a bias force that urges the piston (34) to move in the first direction. The spring (36) is at least partially disposed within the recess (50), and at least partially surrounding the inner cylindrical section (46).
IPC 8 full level
F16K 1/22 (2006.01); F16K 31/163 (2006.01)
CPC (source: EP US)
F16K 1/221 (2013.01 - EP US); F16K 31/1635 (2013.01 - EP US)
Citation (search report)
- [X] US 4903939 A 19900227 - ARIIZUMI RYOZO [JP], et al
- [X] US 4712576 A 19871215 - ARIIZUMI RYOZO [JP], et al
- [A] WO 9942753 A1 19990826 - FISHER CONTROLS INT [US]
- [A] US 5003864 A 19910402 - DYER JOHN [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 1873430 A2 20080102; EP 1873430 A3 20081112; US 2008001108 A1 20080103; US 7731152 B2 20100608
DOCDB simple family (application)
EP 07111284 A 20070628; US 47979406 A 20060630